JPS6120490A - Speaker device - Google Patents
Speaker deviceInfo
- Publication number
- JPS6120490A JPS6120490A JP14094184A JP14094184A JPS6120490A JP S6120490 A JPS6120490 A JP S6120490A JP 14094184 A JP14094184 A JP 14094184A JP 14094184 A JP14094184 A JP 14094184A JP S6120490 A JPS6120490 A JP S6120490A
- Authority
- JP
- Japan
- Prior art keywords
- air flow
- duct
- flow path
- bass
- speaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000011514 reflex Effects 0.000 claims description 31
- 230000002787 reinforcement Effects 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000000470 constituent Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000002784 stomach Anatomy 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
- H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only
- H04R1/28—Transducer mountings or enclosures modified by provision of mechanical or acoustic impedances, e.g. resonator, damping means
- H04R1/2807—Enclosures comprising vibrating or resonating arrangements
- H04R1/2815—Enclosures comprising vibrating or resonating arrangements of the bass reflex type
- H04R1/2823—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material
- H04R1/2826—Vents, i.e. ports, e.g. shape thereof or tuning thereof with damping material for loudspeaker transducers
Landscapes
- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は民生用もしくは業務用の＾忠実度再生スピーカ
装置の音質改善に１５’Ｊづるものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is directed to improving the sound quality of fidelity reproduction speaker devices for consumer or business use.
従来例の構成とその問題点
一般に＾忠実度再生スピーカ装置の低音域の増強のため
の一つの方法とし′【、バスレフ方式が広く用いられて
いる。この方式の概要を第１図に基づいて説明する。Conventional configurations and their problems In general, as one method for enhancing the bass range of a fidelity reproduction speaker device, the bass reflex system is widely used. An overview of this method will be explained based on FIG.
図において、１はスピーカキャビネット、２゜３はスピ
ーカキャビネット１の前面に設けられたＩＳ＠用スピー
カユニットと低音用スピーカユニット、４は低音用スピ
ーカユニット３のＴｈに位置してスビーカニ１トビネッ
ト１前面に設けられたバスレフ方式低音増強用ダクト（
以下「バスレフダクト」という）、５はスピーカキャビ
ネット１内に設けられた帯域分割用クロスオーバーネッ
トワーク回路である。なお、６はバスレフダクト４両端
の開口部を示１゜
この方式は、パスレフダク］−４の間口部６とスピーカ
キャビネット１の容積、バスレフダクト４内の空気の質
かなどによって得られる共振周波数ｆ、を用いて低音を
増強、放射するものであり、ｆ、は通常、！＋ＯＨｚ
〜１００ｔ−１ｚとイッた低イＭ 波数に調整されてい
る。そして１０以上の周波数においてはバスレフダクト
４からの音波の放射は無視されているのであるが、ネッ
トワーク回２８５によって決まる低音用スピーカユニッ
ト３の高域しゃ断層波数が低音用スピーカユニット３の
後面とバスレフダク１〜４の開口部６の距離を１波長と
する周波数よりも高い場合、もしくはこのスピーカシス
テムがフルレンジ望スピーカユニットを用いた帯域分割
回路を持たないフルレンジ型バスレフ方式スピーカＢ
胃の場合、低音用スピーカユニット３の後面から放射さ
れた音波が丁度１波長（同相）でバスレフダクト４の間
口部６に達して、低音用スピーカユニット３の前面から
放射される音波と逆相となって放射されるので、この周
波数では正負２重音源がスピーカバフル面上に存在する
ことになり、スピーカ装置の音圧周波数特性、指向特性
などに著しい乱れを生ずることが知られている。この周
波数は酋通の家庭用高忠実度再生スピーカ装置において
は、低音用スピーカユニット３の液面とバスレフダクト
４の聞１］部６間の距離が長いもので３０α前後となる
ので、音波の空気中の速度、毎秒３１０ｍどの関係より
、約ＩＫ）−１ｚとなる。In the figure, 1 is the speaker cabinet, 2.3 is the IS@ speaker unit and bass speaker unit provided on the front of the speaker cabinet 1, and 4 is the bass speaker unit 3 located at the Th of the bass speaker unit 3. Bass reflex type bass reinforcement duct installed in (
5 is a band division crossover network circuit provided in the speaker cabinet 1 (hereinafter referred to as a "bass reflex duct"). Note that 6 indicates the openings at both ends of the bass reflex duct 4. This method is based on the resonance frequency f obtained depending on the volume of the frontage 6 of the bass reflex duct 4, the volume of the speaker cabinet 1, the quality of the air inside the bass reflex duct 4, etc. , is used to enhance and radiate bass, and f is usually ! +OHz
It is adjusted to a low M wave number of ~100t-1z. At frequencies above 10, the sound wave radiation from the bass reflex duct 4 is ignored, but the high-frequency cutoff layer wave number of the bass speaker unit 3 determined by the network circuit 285 is between the rear surface of the bass speaker unit 3 and the bass reflex duct 4. If the frequency is higher than the frequency where the distance between the openings 6 of 1 to 4 is one wavelength, or if this speaker system is a full-range bass reflex speaker B that does not have a band division circuit using a full-range speaker unit.
In the case of the stomach, the sound waves emitted from the rear surface of the bass speaker unit 3 reach the frontage 6 of the bass reflex duct 4 at exactly one wavelength (in phase), and are in opposite phase to the sound waves emitted from the front surface of the bass speaker unit 3. Therefore, at this frequency, a double positive and negative sound source exists on the speaker baffle surface, which is known to cause significant disturbances in the sound pressure frequency characteristics, directivity characteristics, etc. of the speaker device. This frequency is around 30α in the home high-fidelity reproduction speaker system made by Kotsu, where the distance between the liquid level of the bass speaker unit 3 and the bass reflex duct 4 is long, so the frequency is around 30α. The speed in the middle is 310 m/s, so it is approximately IK)-1z.
したかって、ＩＫＨｚ稈の周波数を低音用スピーカユニ
ットから放射しているスピーカ装置およびフルレンジ型
スピーカシステムにおいては現実的にこの有害成分が問
題となっていた。このため従来は、スピーカ装置の低音
用スピーカユニット３の受持ち帯域を決める際、低音用
スピーカユニット３とバスレフダクト４の距離に１１限
があるという問題があった。Therefore, this harmful component actually poses a problem in speaker devices and full-range speaker systems that radiate the IKHz frequency from a bass speaker unit. For this reason, conventionally, when deciding the assigned frequency band of the bass speaker unit 3 of the speaker device, there was a problem that there was a limit of 11 distances between the bass speaker unit 3 and the bass reflex duct 4.
発明の目的
本発明は上記従来の問題を解消するもので、簡単な構成
で有害な周波数の放射のみを取り除くことを可能にする
スピーカ装置を提供することを目的とする。OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional problems, and aims to provide a speaker device that can remove only harmful frequency radiation with a simple configuration.
発明の構成
上記目的を達成Ｊるため、本発明のスピーカ装置は、ス
ピーカキャビネットと、スピーカユニットと、バスレフ
型式低音増強用ダクトを有するバスレフ方式スピーカ装
置であって、前記バスレフ方式低音増強用ダクトに、こ
のダクトに接続される空気流通路と、この空気流通路に
接続される空気室を備えた帯域しゃ断が可能な音響共鳴
器を取り付ける構成としたものであり、これにより、バ
スレフ方式低音増強用ダクトから放射される有害音波を
簡単な構成の音響共鳴器によって容易に吸収することが
でき、低音用スピーカユニットとバスレフダクトの距離
を自由に設定することができるものである。Structure of the Invention In order to achieve the above object, the speaker device of the present invention is a bass reflex speaker device having a speaker cabinet, a speaker unit, and a bass reflex type bass reinforcement duct, the speaker device comprising: a speaker cabinet, a speaker unit, and a bass reflex type bass reinforcement duct; , an air flow passage connected to this duct and an acoustic resonator capable of band cutoff equipped with an air chamber connected to this air flow passage are installed. Harmful sound waves emitted from the duct can be easily absorbed by an acoustic resonator with a simple configuration, and the distance between the bass speaker unit and the bass reflex duct can be freely set.
実施例の説明
以下、本発明の一実施例について、第２図に基づいて説
明する。なお、第１図に示したものと同一の働きをなで
ものは同一番号を付して説明を省略する。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. Components having the same functions as those shown in FIG. 1 are designated by the same numbers and their explanations will be omitted.
図において、７はスピーカキャビネット部に設けられた
音響共鳴器で、バスレフダクト４の途中に接続された空
気流通路８と、この空気流通路８に接続された空気室９
とから構成されている。この場合、空気流通路８はパス
レフダク１〜４の前面開口部６近傍に接続され、その構
成部材の一部にスピーカー１１１ビネツト１が利用され
ている。In the figure, 7 is an acoustic resonator provided in the speaker cabinet, which includes an air flow passage 8 connected to the middle of the bass reflex duct 4 and an air chamber 9 connected to this air flow passage 8.
It is composed of. In this case, the airflow passage 8 is connected to the vicinity of the front opening 6 of the pass reflex ducts 1 to 4, and the speaker 111 and the vine 1 are used as part of its constituent members.
また、空気室９もその構成１１１ＩＡの一部にスビーカ
キ１ｔビネッｌ〜１が利用されている。なお、空気流通
路８や空気室９の構成部材にスピーカキャビネット１を
必ずししイ・り用づる必要はなく、別個成型加工品を用
いてしよい。また、空気流通路８のバスレフダクト４へ
の接続は、間ロ部６近傍に限らず、バスレフダクト４の
長手方向中間部等に接続してもよい。Further, the air chamber 9 also uses Subi Oyster 1t Binet 1~1 in a part of its configuration 111IA. Note that it is not necessary to use the speaker cabinet 1 as the constituent members of the air flow passage 8 and the air chamber 9, and separate molded products may be used. Furthermore, the connection of the airflow passage 8 to the bass reflex duct 4 is not limited to the vicinity of the gap portion 6, but may be connected to a longitudinally intermediate portion of the bass reflex duct 4 or the like.
このような構成にＪ、ると、空気流通路８の開【］部と
空気室９の容積によって構成されるコンプライアンスと
、空気流通路８内の空気の質重によって得られるヘルム
ホルツの音響共鳴器７の共鳴周波数を空気流通路８の間
口面積と長さおよび空気室９の容積を適当に決めること
により、パスレフダク１−４の開口部６より放射される
約ＩＫＨｚの有害音波をこの音響共鳴器７に吸収させ、
しゃ断することが容易にできる。このため、本スピーカ
装置においては、バスレフダクト４からの有害な音波の
放射は減表され、音圧周波数特性、指向特性の乱れが少
なくなる。With such a configuration, a Helmholtz acoustic resonator is obtained by the compliance formed by the opening of the air flow passage 8 and the volume of the air chamber 9, and the mass and weight of the air in the air flow passage 8. By appropriately determining the resonance frequency of 7, the frontage area and length of the airflow passage 8, and the volume of the air chamber 9, harmful sound waves of approximately IKHz radiated from the opening 6 of the pass reflex duct 1-4 can be reduced by this acoustic resonator. 7 to absorb,
It can be easily cut off. Therefore, in this speaker device, harmful sound waves are emitted from the bass reflex duct 4 at a reduced rate, and disturbances in sound pressure frequency characteristics and directivity characteristics are reduced.
発明の効果
以上本発明によれば、バスレフ方式抵当増強用グク１−
から放射される有害音波を簡単な構成の音青共鳴器によ
って容易に吸収することができ、低音用スピーカユニッ
トとバスレフダクトの距離を自由に設定することができ
る。したがって、スピーカ装置の特性設計上きわめて有
利である。Effects of the Invention According to the present invention, bass reflex type mortgage reinforcement material 1-
Harmful sound waves emitted from the bass reflex duct can be easily absorbed by a simply configured tone resonator, and the distance between the bass speaker unit and the bass reflex duct can be freely set. Therefore, it is extremely advantageous in designing the characteristics of the speaker device.
第１図は従来のバスレフ方式スピーカ装置の断面図、第
２図は本発明に係るバスレフ方式スピーカ装置の断面図
である。
１・・・スピーカ１Ｖビネツト、２・・・高音用スピー
カユニット、３・・・低音用スピーカユニット、４・・
・バスレフダクト、７・・・音響共鳴器、８・・・空気
流通路、９・・・空気室
代理人 森 本 義 弘
第１図FIG. 1 is a sectional view of a conventional bass reflex speaker device, and FIG. 2 is a sectional view of a bass reflex speaker device according to the present invention. 1...Speaker 1V vignetting, 2...Treble speaker unit, 3...Bass speaker unit, 4...
・Bass reflex duct, 7...Acoustic resonator, 8...Air flow path, 9...Air chamber agent Yoshihiro MorimotoFigure 1
Claims (1)
スレフ方式低音増強用ダクトを有するバスレフ方式スピ
ーカ装置であって、前記バスレフ方式低音増強用ダクト
に、このダクトに接続される空気流通路と、この空気流
通路に接続される空気室を備えた帯域しゃ断が可能な音
響共鳴器を取付けたスピーカ装置。1. A bass reflex speaker device having a speaker cabinet, a speaker unit, and a bass reflex bass reinforcement duct, which comprises: the bass reflex bass reinforcement duct; an air flow passage connected to the duct; and the air flow passage. A speaker device equipped with an acoustic resonator that is capable of band cutoff and has an air chamber connected to the
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14094184A JPS6120490A (en) | 1984-07-06 | 1984-07-06 | Speaker device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14094184A JPS6120490A (en) | 1984-07-06 | 1984-07-06 | Speaker device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6120490A true JPS6120490A (en) | 1986-01-29 |
Family
ID=15280374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14094184A Pending JPS6120490A (en) | 1984-07-06 | 1984-07-06 | Speaker device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6120490A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010977A (en) * | 1988-07-22 | 1991-04-30 | Yamaha Corporation | Acoustic apparatus with plural resonators having different resonance frequencies |
| JPH03274892A (en) * | 1990-03-23 | 1991-12-05 | Sharp Corp | Electroacoustic transducer |
| JP2009147594A (en) * | 2007-12-13 | 2009-07-02 | Mitsuaki Toya | Speaker enclosure |
| US7565948B2 (en) | 2004-03-19 | 2009-07-28 | Bose Corporation | Acoustic waveguiding |
| US7584820B2 (en) | 2004-03-19 | 2009-09-08 | Bose Corporation | Acoustic radiating |
| US9716940B2 (en) | 2013-03-22 | 2017-07-25 | Flare Audio Technologies Limited | Acoustic device |
-
1984
- 1984-07-06 JP JP14094184A patent/JPS6120490A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010977A (en) * | 1988-07-22 | 1991-04-30 | Yamaha Corporation | Acoustic apparatus with plural resonators having different resonance frequencies |
| JPH03274892A (en) * | 1990-03-23 | 1991-12-05 | Sharp Corp | Electroacoustic transducer |
| US7565948B2 (en) | 2004-03-19 | 2009-07-28 | Bose Corporation | Acoustic waveguiding |
| US7584820B2 (en) | 2004-03-19 | 2009-09-08 | Bose Corporation | Acoustic radiating |
| JP2009147594A (en) * | 2007-12-13 | 2009-07-02 | Mitsuaki Toya | Speaker enclosure |
| US9716940B2 (en) | 2013-03-22 | 2017-07-25 | Flare Audio Technologies Limited | Acoustic device |
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